<template>
  <el-form label-width="100px">
    <el-form-item label="SPU名称">
      <el-input
        placeholder="请你输入SPU名称"
        v-model="SpuParams.spuName"
      ></el-input>
    </el-form-item>

    <el-form-item label="SPU品牌" width="100">
      <el-select v-model="SpuParams.tmId">
        <el-option
          v-for="(item, index) in allTradeMark"
          :key="item.id"
          :label="item.tmName"
          :value="item.id"
        ></el-option>
      </el-select>
    </el-form-item>

    <el-form-item label="SPU描述">
      <el-input
        type="textarea"
        placeholder="请你输入描述"
        v-model="SpuParams.description"
      ></el-input>
    </el-form-item>

    <el-form-item label="SPU图标">
      <!-- 
        v-model:fileList 展示默认图片
        action:伤残图片的接口地址
        list-type:文件列表的类型
       -->

      <el-upload
        v-model:file-list="imgList"
        action="/api/admin/product/fileUpload"
        list-type="picture-card"
        :on-preview="handlePictureCardPreview"
        :on-remove="handleRemove"
        :before-upload="handlerUpload"
      >
        <el-icon><Plus /></el-icon>
      </el-upload>

      <el-dialog v-model="dialogVisible">
        <img
          w-full
          :src="dialogImageUrl"
          alt="Preview Image"
          style="width:100%,height:100%"
        />
      </el-dialog>
    </el-form-item>

    <el-form-item label="SPU销售属性">
      <!-- 展示销售属性的状态 -->
      <el-select
        v-model="saleAttrIdAndValueName"
        :placeholder="
          unSelectSaleAttr.length
            ? `还未选择${unSelectSaleAttr.length}个`
            : '无'
        "
      >
        <el-option
          :value="`${item.id}:${item.name}`"
          v-for="(item, index) in unSelectSaleAttr"
          :key="item.id"
          :label="item.name"
        ></el-option>
      </el-select>
      <el-button
        :disabled="saleAttrIdAndValueName ? false : true"
        style="margin-left: 10px"
        type="primary"
        size="default"
        icon="Plus"
        @click="addSaleAttr"
        >添加属性</el-button
      >

      <!-- table展示销售属性与属性值的地方 -->
      <el-table border style="margin: 10px 0px" :data="saleAttr">
        <el-table-column
          label="序号"
          type="index"
          align="center"
          width="80px"
        ></el-table-column>
        <el-table-column
          label="销售属性名称"
          width="120px"
          prop="saleAttrName"
        ></el-table-column>
        <el-table-column label="销售属性值">
          <!-- row:即为当前SPU已有的销售属性对象 -->
          <template #="{ row, $index }">
            <el-tag
              @close="row.spuSaleAttrValueList.splice(index, 1)"
              v-for="(item, index) in row.spuSaleAttrValueList"
              :key="row.name"
              class="mx-1"
              closable
            >
              {{ item.saleAttrValueName }}
            </el-tag>

            <el-input
              @blur="toLook(row)"
              v-model="row.saleAttrValue"
              v-if="row.flag == true"
              placeholder="请你输入属性值"
              size="small"
              style="width: 100px"
            ></el-input>
            <el-button
              @click="toEdit(row)"
              v-else
              type="primary"
              size="small"
              icon="Plus"
            ></el-button>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="120px">
          <template #="{ row, $index }">
            <el-button
              type="primary"
              size="small"
              icon="Delete"
              @click="saleAttr.splice($index, 1)"
            ></el-button>
          </template>
        </el-table-column>
      </el-table>
    </el-form-item>

    <el-form-item>
      <el-button
        :disabled="saleAttr.length > 0 ? false : true"
        type="primary"
        size="default"
        @click="save"
        >保存</el-button
      >
      <el-button type="primary" size="default" @click="cancel">取消</el-button>
    </el-form-item>
  </el-form>
</template>

<script setup lang="ts">
import { computed, ref } from "vue";
import type {
  SaleAttrValue,
  SpuData,
  AllTradeMark,
  SpuHasImg,
  SaleAttrResponseData,
  HasSaleAttrResponseData,
  SpuImg,
  SaleAttr,
  HasSaleAttr,
} from "@/api/product/spu/type";
import {
  reqAllTradeMark,
  reqSpuImageList,
  reqSpuHasSaleAttr,
  reqAllSaleAttr,
  reqAddOrUpdateSpu,
} from "@/api/product/spu";
import { TradeMark } from "@/api/product/trademark/type";
import { ElMessage } from "element-plus";
let $emit = defineEmits(["changeScene"]);

// 点击取消按钮
const cancel = () => {
  $emit("changeScene", { flag: 0, params: "update" });
};

// 存储已有的SPU这些数据
let allTradeMark = ref<TradeMark[]>([]);
// 商品的图片
let imgList = ref<SpuImg[]>([]);
// 已有的SPU的属性
let saleAttr = ref<SaleAttr[]>([]);
// 全部销售属性
let allSaleAttr = ref<HasSaleAttr[]>([]);
// 控制照片墙对话框的显示与隐藏
let dialogVisible = ref<boolean>(false);
// 存储预览图片地址
let dialogImageUrl = ref<string>("");
// 将来收集还未选择的销售属性的ID与属性值的名字
let saleAttrIdAndValueName = ref<string>("");

// 存储已有的SPU对象
let SpuParams = ref<SpuData>({
  category3Id: "", //收集三级分类的ID
  spuName: "", //SPU的名字
  description: "", //SPU的描述
  tmId: "", //品牌的ID
  spuImageList: [],
  spuSaleAttrList: [],
});

// 计算当前SPU还未拥有的销售属性
let unSelectSaleAttr = computed(() => {
  // 全部销售属性:颜色,版本,尺码
  // 已有的销售属性:颜色,版本
  let unSelectArr = allSaleAttr.value.filter((item) => {
    return saleAttr.value.every((item1) => {
      return item.name != item1.saleAttrName;
    });
  });
  return unSelectArr;
});

// 子组件调用请求方法
const initHasSpuData = async (row: SpuData) => {
  //存储已有的SPU的对象
  SpuParams.value = row;

  // spu即为父组件传递过来的已有SPU对象
  // 获取全部品牌的数据
  let result: AllTradeMark = await reqAllTradeMark();

  // 获取某一个品牌旗下全部售卖商品图片的数据
  let resultImg: SpuHasImg = await reqSpuImageList(row.id as number);
  // 获取已有的SPU销售属性的数据
  let result2: SaleAttrResponseData = await reqSpuHasSaleAttr(row.id as number);
  // 获取整个项目全部SPU的销售属性
  let result3: HasSaleAttrResponseData = await reqAllSaleAttr();

  // 存储全部品牌的数据
  allTradeMark.value = result.data;
  // SPU对应商品图片
  imgList.value = resultImg.data.map((item) => {
    return {
      name: item.imgName,
      url: item.imgUrl,
    };
  });
  // 存储已有的SPU的销售属性
  saleAttr.value = result2.data;
  // 存储全部的销售属性
  allSaleAttr.value = result3.data;
};

// 照片墙点击预览按钮触发的函数钩子
const handlePictureCardPreview = (file: any) => {
  dialogImageUrl.value = file.url;
  dialogVisible.value = true;
};

// 删除的钩子函数
const handleRemove = () => {};
// 照片墙上传成功之前的钩子约束文件的大小与类型
const handlerUpload = (file: any) => {
  if (
    file.type == "image/png" ||
    file.type == "image/jpeg" ||
    file.type == "image/gif"
  ) {
    if (file.size / 1024 / 1024 < 3) {
      return true;
    } else {
      ElMessage({
        type: "error",
        message: "上传文件务必小于3MB",
      });
      return false;
    }
  } else {
    ElMessage({
      type: "error",
      message: "上传文件务必PNG|JPG|GIF",
    });
    return false;
  }
};

// 添加销售属性
const addSaleAttr = () => {
  const [baseSaleAttrId, saleAttrName] =
    saleAttrIdAndValueName.value.split(":");
  // 准备一个新的销售属性对象
  let newSaleAttr: SaleAttr = {
    baseSaleAttrId,
    saleAttrName,
    spuSaleAttrValueList: [],
  };

  // 追加到数组当中
  saleAttr.value.push(newSaleAttr);
  // 清空收集的数据
  saleAttrIdAndValueName.value = "";
};

// 属性值按钮的点击事件
const toEdit = (row: SaleAttr) => {
  // 点击按钮的时候
  row.flag = true;
  row.saleAttrValue = "";
  console.log(row);
};

// 当属性值查看的时候
const toLook = (row: SaleAttr) => {
  // 表单元素失去焦点的事件回调
  const { baseSaleAttrId, saleAttrValue } = row;
  // 整理称服务器需要的属性值的形式
  console.log(baseSaleAttrId, saleAttrValue);
  let newSaleAttrValue: SaleAttrValue = {
    baseSaleAttrId,
    saleAttrValueName: saleAttrValue as string,
  };

  // 非法情况判断
  if ((saleAttrValue as string).trim() == "") {
    ElMessage({
      type: "error",
      message: "属性值不能为空",
    });
    return;
  }

  // 判断属性值是否在数组当中存在
  let repeat = row.spuSaleAttrValueList.find((item) => {
    return item.saleAttrValueName == saleAttrValue;
  });
  if (repeat) {
    ElMessage({
      type: "error",
      message: "属性值重复",
    });
    return;
  }
  console.log(repeat);

  // 追加新的属性值对象
  row.spuSaleAttrValueList.push(newSaleAttrValue);

  // 切换为查看模式
  row.flag = false;
};

// 保存按钮的回调
const save = async () => {
  // 整理参数
  // 1.照片墙的数据
  SpuParams.value.spuImageList = imgList.value.map((item: any) => {
    return {
      imgName: item.name, //图片的名字
      imgUrl: (item.response && item.response.data) || item.url,
    };
  });

  // 2.整理销售属性的数据
  SpuParams.value.spuSaleAttrList = saleAttr.value;

  console.log(SpuParams, "数据");
  //发送请求
  let result = await reqAddOrUpdateSpu(SpuParams.value);
  if (result.code == 200) {
    ElMessage({
      type: "success",
      message: SpuParams.value.id ? "更新成功" : "添加成功",
    });
    // 通知父组件切换场景为0
    $emit("changeScene", {
      flag: 0,
      params: SpuParams.value.id ? "update" : "add",
    });
  } else {
    ElMessage({
      type: "error",
      message: SpuParams.value.id ? "更新失败" : "添加失败",
    });
  }
  console.log(result);
};

// 添加一个新的SPU初始化请求方法
const initAddSpu = async (c3Id: number | string) => {
  // 清空数据
  Object.assign(SpuParams.value, {
    category3Id: "", //收集三级分类的ID
    spuName: "", //SPU的名字
    description: "", //SPU的描述
    tmId: "", //品牌的ID
    spuImageList: [],
    spuSaleAttrList: [],
  });

  // 清空照片
  imgList.value = [];
  // 清空销售属性
  saleAttr.value = [];

  // 存储三级分类的ID
  SpuParams.value.category3Id = c3Id;

  // 获取全部匹配的数据
  let result: AllTradeMark = await reqAllTradeMark();
  let result1: HasSaleAttrResponseData = await reqAllSaleAttr();
  // 储存数据
  allTradeMark.value = result.data;
  allSaleAttr.value = result1.data;
};

// 对外暴露
defineExpose({ initHasSpuData, initAddSpu });
</script>

<style></style>
